The terms x64 and x86 refer to the two different types of microprocessors that are widely used in personal computers. The x64 designation refers to processors that use the x86-64 instruction set, which is a 64-bit extension of the x86 instruction set. The x86 designation refers to processors that use the original x86 instruction set, which is a 32-bit instruction set.

Most personal computers sold today use x64 processors. However, there are still some personal computers that use x86 processors. If you are not sure which type of processor your computer uses, you can find out by running the dxdiag …